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MAVERICK [17]
3 years ago
6

The three main geochemical cycles of Earth are _____, _____, and _____. These geochemical cycles continuously remove and add mat

erial on Earth.
A) water, fire, and earth
B) hydrologic, heat, and rock
C) hydrologic, rock, and tectonic
Chemistry
2 answers:
irina1246 [14]3 years ago
7 0
Hydrologic, rock and tectonics are the three main geochemical cycles of earth 



gangsta on here u heard
vladimir1956 [14]3 years ago
4 0

The correct option is C.

The geochemical cycle refers to the pathway through which certain chemical elements pass on the surface of the earth and underneath the surface of the earth. The cycle is described as geochemical because it involved both the geological and chemical factors. The three major geochemical cycles that exist on the earth are hydrologic, rock and tectonic cycles. The hydrologic cycle deal with the movement of water round the earth surface, both underneath and on the surface of the earth, the rock cycle deal with rocks while the tectonic cycle deal with rock deformation process.

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4 b + 3 o2 → 2 b2o3 if 8 moles of b and 4 moles of o2 are allowed to react, how many moles of b2o3 can be formed?
raketka [301]

The number of moles of  b2o3 that will be formed is determined as 4 moles.

<h3>Limiting reagent</h3>

The limiting reagent is the reactant that will be completely used up.

4 b + 3O₂ → 2b₂O₃

from the equation above;

4 b ------------> 2 b₂O₃

2b ------------> b₂O₃

2 : 1

3O₂  -------------> 2b₂O₃

3  :  2

b is the limiting reagent, thus, the amount of b2o3 to be formed is calculated as;

4 b ------------> 2 moles of  b2o3

8 moles -------> ?

= (8 x 2)/4

= 4 moles

Thus, the number of moles of  b2o3 that will be formed is determined as 4 moles.

Learn more about limiting reactants here: brainly.com/question/14222359

#SPJ1      

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